Valve-gear for two-stage combustion-engines.



K. FBILNER. I I VALVE GEAR FOR TWO-STAGE COMBUSTION 1 Q6L68L nemBs. I

APNJUATION FILED 'NOV. 26, 1910. V Y

Patented May 13, 1913.

f" KARI; FEILNER, or nunamsaas, GERMANY.

VALVE-GEAR r012. TWO-STAGECOMBUSTION-ENGINES.

I Specification of .Letters Patent.

if Application filed November 26, 1910. Serial No. 594,252.

To all whom it may concern:

' Be it'known thatI KARL FEILNER, a citizen of the Empire of Germany, residing at Nuremberg, in the Empire of Germany, have invented a new and useful Valve-Gear for Two-Stage Combustion-Engines, of

i which thefollowingis a specification.

Two-stage combustion engines running at a very high speed present the difiiculty, that revolutions as the crankshaft. The valves of the same kind are disposed in pairs on both sides of-the cam disk shaft and the several cam disks adapted to each operate one pair of valves are each given two opposite cams, so that each valveis actuated by. one cam during onerevolution of the crankshaft and by the other cam during the following revolution of the crankshaft. Thus the new valve gear is not only very simple, but also'preseuts the advantage, that the speed of the caui'disk shaft is reduced to half that of the crankshaft, so that thework-of the rapidly-rimming engine is very favorably influenced, since the valves are more softly actuated.

I will now proceed to describe my invention with reference to the accompanying drawing, in which? Fi ure 1 is a top view of a cylinder cover provlded with four air valves and two hydrocarbon valves and also with a cam disk shaft carrying cam disks for actuating the valves, and Fig. 2 is a vertical central section through the same.

Similar letters of reference refer to similar parts in both views. v

(2 denotes a cylinder cover of any known construction for avertical two-stage combustion engine. In this cover ef ur air revolutions of the latter.

valves'a, b, 'c,:d and two hydrocarbon valves g of any known construction are disposed in pairs in parallel vertical planes at right angles to a cam disk shaft 71., which is for example disposed above the cover 6 in its vertical central plane.

same kind. The cam disk shaft h is in any known manner so driven from the crank shaft as to make only half the number of It carries three D STATES P iTENT OFFICE.

Patented May 13, 19.13.

It is to be noted,' that the valves in each pair are to be of the cam disks 2', 7c and l, which are each provided a with two opposite cams, so-that the two valves in 'each (pairare simultaneously.

opened and close by the respective cam disk. 'For example the middle cam disk I has two opposite cams m, m (Fig. 2) and it will be seen, that the two hydrocarbon valves f and 9 can be simultaneously opened from the two cams m, m by means of suitable bellcrank levers n n and p q rocking ato and 1' respectively. Either valve, say f, will be actuated by one cam m during one revolution of the crankshaft and by the other cam m during the following revolution; In a similar manner the two air valves a'and a in the same vertical plane will be simultaneously opened and closed and each alternately actuated by the two cams on the cam disk 2'. The two other air valves 6 and d will be simultaneously opened and closed and each alternately actuated by the two cams on the cam disk is. Of course the two val res in each pair requi .e to be'dis osed on both sides of the vcam disk shaft They are shown to be symmetrically disposed with regard to the cam disk shaft k. If necessary, the latter will have to be disposed on one side of the central line of the cover, in

case a piston rod passes through the cover 0.

Obviously the cover 1; will require to be placed vertically for a hor zont l two-stage combustion engine.

I' claim: v

in a two-stage combustion engine, the combination with a cylinder cover, of a cam disk shaft disposed near said cover at right angles to ts axis and adapted to be driven at half the speed of the crankshaft, even numbers of air valves disposed in pairs 111 sa-id cover'ih pa'falleIJplanes at right 'angles means for transmitting the motion from said; 5

to and on both sides off said cam 1sk shaft, cam disks to said air valvesand hydrocarbon ,even numbersof hydrocarbdn valves simi-. valves respectively. 'larl disposed in said cover, cam disks on- 5 said cam disk shaft having each tvvp oppo- Witnesses:

site cams for simultaneouslyactuating'the 4 P;-GOE'rz,

two valves of the eqrrespogding' pair, and RALPH W. Dox.

:KARL EiLNER. 

